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Finding the Fourth Proportional to 18,706.48, 28,035.47 and 7,600.28

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Solution

The fourth proportional to 18,706.48, 28,035.47 and 7,600.28 is: 11,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.48 : 28,035.47 = 7,600.28 : x
  2. Step 2: Convert to fraction form
    18,706.48/28,035.47 = 7,600.28/x
  3. Step 3: Cross multiply
    18,706.48x = 28,035.47 × 7,600.28
  4. Step 4: Simplify right side
    18,706.48x = 213,077,300.75
  5. Step 5: Solve for x
    x = 213,077,300.75/18,706.48
  6. Step 6: Final answer
    x = 11,390.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.